1. Division of Otolaryngology–Head and Neck Surgery, George Washington University School of Medicine and Health Sciences, Washington, District of Columbia
2. College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, California
3. Department of Otolaryngology–Head and Neck Surgery, University of Miami Miller School of Medicine, Miami, Florida
4. Department of Otolaryngology–Head and Neck Surgery, University of Maryland School of Medicine, Baltimore, Maryland